Atopy is a predisposition toward developing certain allergic hypersensitivity reactions. Atopy may have a hereditary component, although contact with the allergen or irritant must occur before the hypersensitivity reaction can develop.
As of 2012, 63.9 percent of players playing in Major League Baseball are white. There is no way of telling the exact number due to the number of players.
African Americans make up nearly 65 percent of NFL rosters. The league began in 1920. Yet only a handful of black players have kicked for a living: Horace Gillom, Greg Coleman, Reggie Roby, Donald Igwebuike, Rodney Williams, Danny Knight, Cedric Ogelsby, and Justin Medlock. To put it in perspective, Augusta National now has more women members than the NFL has black kickers.